#include <stdio.h>

typedef char* byte_pointer;

void show_bytes(byte_pointer start,size_t len)
{
    size_t i;
    for(i = 0 ; i < len ; ++i)
    {
        printf("%.2x",start[i]);
    }
    printf("\n");
}

void show_int(int x)
{
    show_bytes((byte_pointer)&x , sizeof(x));
}

void show_float(float x)
{
    show_bytes((byte_pointer)&x,sizeof(x));
}

void show_pointer(void* x)
{
    show_bytes((byte_pointer)x,sizeof(x));
}

void test_show_bytes(int val)
{
    int ival = val;
    float fval = (float)val;
    int* pval = &ival;
    show_int(ival);
    show_float(fval);
    show_pointer(pval);
}

int main()
{
    test_show_bytes(12345);
    return 0;
}